222 Certain Terrestrial Pulmonata 



!PMl>a, SllUcsttSi, MuLLER {Gonidomus). 



Lingual membrane long and very narrow. Eows of teeth arranged en 

 chevron. Teeth separated, aculeate, as in Pupa palanga Lesson photo- 

 graphed by us, (Araer. Jour. Conch. V. pi. xi. fig. 1.) 



We obtained no jaw on boiling the buccal mass in a solu- 

 tion of caustic potash. 



This species belongs to the genus Gonospira, in which 

 P. palanga was placed by Crosse and Fischer (Journal de 

 Conch. IX, 213, (1869) pi. xi, figs. 6-8). 



The specimen examined, sent from Mauritius by Consul 

 Pike, was kindly supplied by Mr. John G. Anthony. 



]tuliiuia§ aullaco.§t'ylii§, Pfk. (Eurytus). 



Lingual membrane as usual in the genus, tlie marginal teeth simply 

 modified from the laterals. 



Jaw sliglitly arcuate, membranous, almost transparent, in one single 

 piece, but divided by delicate ribs into more than sixty plate-like sections, 

 as common in the genus Bulimulus, CylindreUa, etc. No upper median 

 triangular plate, but the ribs run somewhat obliquely to the centre. 



We are indebted for this specimen from St. Lucia, and 

 for the following from St. Vincent, to Govenor Rawson. 



ISuIbiuus SKii'i.^-silCEii, Born {Felecychilus). 



Jaw and lingual membrane as in the last species. The middle cusp of 

 the central teeth and inner cusp of the lateral teeth long, acute. 



The jaw of this and the preceding species do not agree 

 with the generic description of von Martens "costis validis 

 exarata," but are like that of Bulimulus. This fact gives 

 still more proof of the difficulty of classifying the Bulimi 

 by their jaw, at the present stage of our knowledge of the 

 subject as already remarked by Fischer (Jour, de Conch. 

 XII, 295, 1872). 



